// license:BSD-3-Clause // copyright-holders:Robbbert /*************************************************************************** Digital Microsystems ZSBC-3 11/01/2010 Skeleton driver. 28/11/2010 Connected to a terminal 11/01/2011 Converted to Modern. **************************************************************************** Monitor commands: [] indicates optional Bx = Boot from device x (0 to 7) Dx [y] = Dump memory (hex and ascii) in range x [to y] Fx y z = Fill memory x to y with z Gx = Execute program at address x Ix = Display IN of port x Ox y = Output y to port x Sx = Enter memory editing mode, press enter for next address Mx y = unknown (affects memory) Tx = unknown (does strange things) enter = dump memory from 9000 to 907F (why?) **************************************************************************** TODO: Everything really... Devices of all kinds; Use the other rom for something.. ****************************************************************************/ #include "emu.h" #include "cpu/z80/z80.h" #include "machine/z80ctc.h" #include "machine/z80sio.h" #include "machine/z80pio.h" #include "machine/clock.h" #include "bus/rs232/rs232.h" class zsbc3_state : public driver_device { public: zsbc3_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag) , m_maincpu(*this, "maincpu") { } void zsbc3(machine_config &config); void zsbc3_io(address_map &map); void zsbc3_mem(address_map &map); private: required_device m_maincpu; }; ADDRESS_MAP_START(zsbc3_state::zsbc3_mem) ADDRESS_MAP_UNMAP_HIGH AM_RANGE( 0x0000, 0x07ff ) AM_ROM AM_RANGE( 0x0800, 0xffff ) AM_RAM ADDRESS_MAP_END ADDRESS_MAP_START(zsbc3_state::zsbc3_io) ADDRESS_MAP_UNMAP_HIGH ADDRESS_MAP_GLOBAL_MASK(0xff) AM_RANGE(0x08, 0x0b) //AM_DEVREADWRITE("pio", z80pio_device, read, write) // the control bytes appear to be for a PIO AM_RANGE(0x28, 0x2b) AM_DEVREADWRITE("sio", z80sio_device, cd_ba_r, cd_ba_w) AM_RANGE(0x30, 0x33) AM_DEVREADWRITE("ctc", z80ctc_device, read, write) AM_RANGE(0x38, 0x38) // unknown device, init byte = C3 ADDRESS_MAP_END /* Input ports */ static INPUT_PORTS_START( zsbc3 ) INPUT_PORTS_END MACHINE_CONFIG_START(zsbc3_state::zsbc3) /* basic machine hardware */ MCFG_CPU_ADD("maincpu",Z80, XTAL(16'000'000) / 4) MCFG_CPU_PROGRAM_MAP(zsbc3_mem) MCFG_CPU_IO_MAP(zsbc3_io) MCFG_DEVICE_ADD("ctc", Z80CTC, XTAL(16'000'000) / 4) MCFG_Z80CTC_ZC0_CB(DEVWRITELINE("sio", z80sio_device, txca_w)) MCFG_DEVCB_CHAIN_OUTPUT(DEVWRITELINE("sio", z80sio_device, rxca_w)) MCFG_DEVICE_ADD("clk2mhz", CLOCK, XTAL(16'000'000) / 8) MCFG_CLOCK_SIGNAL_HANDLER(DEVWRITELINE("ctc", z80ctc_device, trg0)) MCFG_DEVCB_CHAIN_OUTPUT(DEVWRITELINE("ctc", z80ctc_device, trg1)) MCFG_DEVCB_CHAIN_OUTPUT(DEVWRITELINE("ctc", z80ctc_device, trg2)) MCFG_DEVCB_CHAIN_OUTPUT(DEVWRITELINE("ctc", z80ctc_device, trg3)) MCFG_DEVICE_ADD("sio", Z80SIO, XTAL(16'000'000) / 4) //MCFG_Z80SIO_OUT_INT_CB(INPUTLINE("maincpu", INPUT_LINE_IRQ0)) // no evidence of a daisy chain because IM2 is not set MCFG_Z80SIO_OUT_TXDA_CB(DEVWRITELINE("rs232", rs232_port_device, write_txd)) MCFG_Z80SIO_OUT_DTRA_CB(DEVWRITELINE("rs232", rs232_port_device, write_dtr)) MCFG_Z80SIO_OUT_RTSA_CB(DEVWRITELINE("rs232", rs232_port_device, write_rts)) MCFG_RS232_PORT_ADD("rs232", default_rs232_devices, "terminal") MCFG_RS232_RXD_HANDLER(DEVWRITELINE("sio", z80sio_device, rxa_w)) MCFG_RS232_CTS_HANDLER(DEVWRITELINE("sio", z80sio_device, ctsa_w)) MCFG_DEVICE_ADD("pio", Z80PIO, XTAL(16'000'000) / 4) //MCFG_Z80PIO_OUT_INT_CB(INPUTLINE("maincpu", INPUT_LINE_IRQ0)) MACHINE_CONFIG_END /* ROM definition */ ROM_START( zsbc3 ) ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF ) ROM_LOAD( "54-3002_zsbc_monitor_1.09.bin", 0x0000, 0x0800, CRC(628588e9) SHA1(8f0d489147ec8382ca007236e0a95a83b6ebcd86)) ROM_REGION( 0x10000, "hdc", ROMREGION_ERASEFF ) ROM_LOAD( "54-8622_hdc13.bin", 0x0000, 0x0400, CRC(02c7cd6d) SHA1(494281ba081a0f7fbadfc30a7d2ea18c59e55101)) ROM_END /* Driver */ /* YEAR NAME PARENT COMPAT MACHINE INPUT STATE INIT COMPANY FULLNAME FLAGS */ COMP( 1980, zsbc3, 0, 0, zsbc3, zsbc3, zsbc3_state, 0, "Digital Microsystems", "ZSBC-3", MACHINE_NO_SOUND_HW)